Centrifugal pump



' R. H. CARSON.

CENTRJFUGAL PUMP. APPLICATION FILED AUG-19,19I9,

1,382,604, Patented June 21,1921,

2 S HEETSSHEET 1.

INVENTOR,

WITNESSES WWW W R. H. CARSON.

CENTRIFUGAL PUMP. \APPLICATION FILED Aue.19. my.

1,3 2,604, Patented June 21,1921.

2 SHEETS-SHEET 2.

Ualggm INVENTOR/ \NiTNESSES WWW- UNITED STATES PATENT OFFICEQ] ROBERT HUG-H CARSON, or nANv LL'R, ILLINOIS, ASSIGNOR'TO GLEN w. REED, or

' DANVILLE, ILLINOIS.

,GENTRIFUGAL PUMP.

:Specification of Letters Patent. Patented June'21, 1921,

Application filed August 19, 1919. Serial No. 318,502.

State of Illinois, have invented a new and useful Centrifugal Pump, of which the following is a specification.

This invention has reference to centrifugal pumps, and its object is to provide means whereby fluid may be propelled with great force, but without the expenditure of undue power, to a destination.

WVhile the invention is adaptable to pumping of various fluids it is particularly adapted for pumping water or other similar liquid, and, for simplicity of expression, the fluid to be pumped will hereinafter be considered as water, without the invention being necessarily confined to such particular material.

In accordance with the invention the pump comprises a stator and a rotor with the latter housed within the stator in such manner as to provide 'a water course from which the water under. pressure is discharged. The water is drawn into the rotor and distributed tochambers therein from which the water is discharged at the periphery of the rotor through passages in trailing relation to the directionof rotation. The passages open from chambers each, capable of containing a considerable amount of water whereby. centrifu'gal force and restricted openings at the periphery of the rotor contribute to putting the bodies of' tailed description taken inconnection-with the accompanying drawings forming part of this specification, with the understanding, however, that the invention is not confined to any strict conformity with'the showing of the drawings but may be changed and modified so long-as such changes and modifications mark no material departure from the salient features 'of the invention as expressed in the appended claims.

In the drawings:- Figure 1 is an elevation of a pumping structure embodying the invention, looking toward the discharge end of the pump.

Fig. 2 is a Vertical axial section of'the pump omitting the driving means illus trated in Fig. 1.

Fig. 3 is a vertical section at right angles to the axis of rotation and cutting through the plane of the meeting faces of easing or stator sections. V

' Fig. at is a perspective view of the rotor omitting one face plate.

I Fig. 5 is a view similar to Fig. 1 but showing a somewhat modified form.

Fig. 6 isa section of the intake connection or coupling of the structure shown in Fig. 5. l V

Referring to the drawings, there is shown a pump casing or stator A which may fol low the general outlines of a centrifugal pump and comprises two sections 1 and 2 having flanges 3 at their meeting edges joined together by bolts 4 or otherwise, usu 'ally with interposed packing 5. In the par ticular showing of the drawings each section 1 and 2is provided with a foot 6 and where the pump is combined with driving means as a. unitary installation, the pump casing A is mounted on a base plate 7'. In Fig- 1 a pedestal 8 is erected on the base plate 7 and is provided with bearings 9 for a hollow shaft 10. Erected on the bearings 9 are posts 11 carrying a table 12 in turn carrying an electric motor 13 of any suitable construction The armature shaft of the motor is provided with a pulley 14 froinwhich there extends .a driving belt 15 carried about another pulley 16 fast on the hollow shaft 10. The casing member 2 is provided with a journal bearing 17 carrying ,a gland 18 through which bearing and gland the shaft 10 eritends to the interior of the casing where the shaft carries a rotor B. The casin A is provided with the usual" tangential outlet neck 19 to which may be attached a delivery pipe 20 to be carried to any suitable point of disposal. 7'

'The'rotor B has a cylindrical peripheral portion 21 which may be made inone piece and-forming one head of the rotor through the center of which the hollow shaft 10 face plate 23, which face plate is omitted inthe showing of Fig. 4. It is to bounwith a face plate 22 radial to the. shaft 10 derstood, however, that the particular construction of the rotor so far described is not at all obligatory and may be varied as desired.

Extending radially inward from the inner wall of the peripheral portion 21 of the rotor are webs 24, which webs may be in one piece with the periphery 21 and with the face plate 22. The webs or division walls stop short of the center of the rotor by a distance about equal to half the diameter of the pipe 10, although these particular dimensions are not obligatory. Each web 24 has enlarge, ments or bosses 25 for the reception of screws or bolts 26 by means of which the face plate 23 may be secured to the body portionof the rotor. At the central portion of the rotor the division plates 24 are sufiiciently separated or spaced to provide ports or passages 27 permitting the 1 entrance of water from the ipe 10 into chambers 28 de fined between tie division walls or partitions 24 and the peripheral portion 21 of the rotor. Midway between the outer ends of each partition or division wall 24'the peripheral portion 21 has ports 29 produced therethrough; these ports, which may be provided in pairs or be otherwise arranged, are inclined in a trailing direction with respect to the direction of rotation.

Located about intermediate of the width of the rotor is an outwardly extending rib 30 located in the course between the rotor and the inner wall. of the stator or casing A. This rib serves as a guide or rudder preventing any tendency of side sway and relieving the bearings of therotor from undue strain. V

In theshowing of Fig.1 and associated figures the shaft 10 not only serves as a shaft but as a duct for the incoming water with the shaft 10 communicating. with a feed pipe 31 connected to the shaft by a packing gland 32 or in any other suitable manner. In the showing of Figs. 5 and 6 a shaft 33, which may be a solid shaft, carries the rotor, and

power is applied to'the shaft through a pul-' ley 16 and belt 15. The casing section 1 is provided with a hub or block 34 through which a hollow stub shaft 35 fast to the face plate 23projects. The stub shaft 35 beyond "the casing member 1 has an annular enlargement 36, .being in the particular showing of the drawings, of angular or V-shape n cross 880131011, whereby to prov de a rib. against which an elbow 37 may be applied, the-elbow having a beveled or chamfered shoulder 38 to engage "the neighboring portion of the annular enlargement of flange 36. The

water-tight manner, permitting ready dismantling and providing a simple construc-, tion.

inlet and outlet ports."

When water is supplied to the rotor B it enters the chambers 28 at the axial portion thereof and fills these chambers so that the major portion of the water in the chambers :isi at the peripheral part thereof.

Furthermore, by providing restricted outlets or ports 29 at the periphery of the rotor and about midway of the peripheral length of each chamber, the contents of each chamber are put under. superior pressure. The result is that jets of waterv :issue through the ports 29 in a trailing direction into the course between the rotor and'stat'or,

with the result that there is a continued driving impulse imparted to the water, the

water finding escape through the outlet neck 19.

The bodies of water within the co1npart-, ments 28 provide mobile inertia bodies" not only contributing to the momentum of, the rotor but causing increased pressure through the ports 29 as the speed of therotor increases and in this way provide correspondingly increased power or propulsion to the water being pumped.

In the construction shown in Fig. l and associated figures the effect is to provide high pressure in the delivered water while the passage of the water through the hollow shaft 10 serves to maintainthe bearings 9 cool, this desirable piality being also present in the bearing 17. he pump of Fig. 5isdesigned more particularly for quantity puinppump is indicated .in Fig. 3 by arrows 41,

while the'direction of travel of the rotor 13 is indicated by the arrow 42.

In the parti'cularshowing of'the drawings the ports 29 are indicated as rectangulanbut it will be'understood they may be round, or oval, or of any suitable shape;

What is claimedis:

1. A centrifugal pump comprising a stator and a rotor within the latter,'the rotor being of substantially cylindrical form and inclosed in the stator and'providinga cylindrical annular water course between them, the rotor having an exterior smooth peripheral radial rib intermediate of its width and traveling in the annular water course to 'serve'as'a guide or rudder, and said rotor having an axial inlet port and constricted outlet ports through the rotor periphery on opposite sides of the rib and also havingiits interior segmentally divided" betweenfthe 2. A centrifugal pump comprising'a st a-, tor and'a rotor within the latter, the rotor being of substantiallycylindrical form and inclosed .in the stator and providing a. cylindrical annular water course between them,

the rotor having an exterior smooth' peripheral radial rib intermediate of its width and traveling in the annular water course to serve as a guide or rudder, and said rotor having an axial inlet port and constricted outlet ports through the rotor periphery on opposite sides of the rib, and the interior of the rotor being radially divided.

3. A centrifugal pump comprising a stator and a rotor within the latter, the rotor containing an outwardly expanding segmental compartment with an inlet means at the axial portion of the rotor and outlet ports at the peripheral portion of the compartment discharging into the space between the rotor and stator, said rotor having an exterior circumferential smooth radial rib and the outlet ports trailing and located on opposite sides of the rib and intermediate of the peripheral length of the compartment.

4. A centrifugal pump provided with a stator and rotor in substantially concentric relation and with the rotor within the stator,

said rotor having a smooth circumferential rib Or blade intermediate of the axial length of the rotor and projecting into the space between the stator and rotor, said stator having segmental compartments within it with inlet ports at the axis and outlet ports on opposite sides of the circumferential rib, and the peripheral portion of the rotor having the ports therethrough on opposite'sides of the rib trailing and discharging into the space between the outer .wall of the rotor and the inner wall of the stator.

5. A centrifugal pump comprising a stator and a rotor in substantially concentric relation, with the rotor provided with a smooth peripheral radial rib projecting from the rotor into the space between the rotor and stator, said rotor having a hollow shaft supporting it and said rotor being radially divided into a plurality of substantially segmental compartments, each having an axial inlet and a peripheral outlet on each side of the rib, said outlet being located substantially midway of the peripheral length of the outer end of the compartment and slanting in trailing relation to the direction of travel of the rotor.

6. A centrifugal pump comprising a stator and a rotor, the rotor being concentric with the stator and provided with a cylindrical outer wall having a smooth central radial rib in the space between the rotor and stator, the rotor being interiorly partitioned to form segmental compartments with the rim of the rotor provided with trailing outlet ports opening into the space between the rotor and stator and located intermediate of the peripheral lengths ofthe compartments.

In testimony, that I claim the foregoing as my own, I have hereto affixed my signature.

ROBERT HUGH CARSON.

It is hcrehyoertified that lIetters Patent No. h3 82fil4, granted June 21, 1552},

upon the application of Robert Hugh Carson, of Danville, Illinois, for an improvement in Centrifugal Pumps, were erroneously issued to Glen W. Reed, as

assignee of the entire interest in said invention, Whereas said Letters Patent should have been issued to the inventor, said Carson, and Glen W. Reed, said Reed being assignee of one-third interest only in said invention, as shown hy the records of assignments in this office; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Oflice. I

Signed and sealed this 23d day of August, A. D., 1921.

KARL FENNING,

Acting Commissioner of Patents.

[SEAL] 

